avformat/vobsub: use av_make_q().

libavformat/mpeg.c

@@ -757,7 +757,7 @@ static int vobsub_read_header(AVFormatContext *s)
                 break;
             }
             timestamp = (hh*3600LL + mm*60LL + ss) * 1000LL + ms + delay;
-            timestamp = av_rescale_q(timestamp, (AVRational){1,1000}, st->time_base);
+            timestamp = av_rescale_q(timestamp, av_make_q(1, 1000), st->time_base);
 
             sub = ff_subtitles_queue_insert(&vobsub->q[s->nb_streams - 1], "", 0, 0);
             if (!sub) {